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Lina I. Ceballos 1 , Emanuele Di Lorenzo 1 , Niklas Schneider 2 , and Carlos D. Hoyos 1

North Pacific Gyre Oscillation synchronizes climate fluctuations in the eastern and western North Pacific. Lina I. Ceballos 1 , Emanuele Di Lorenzo 1 , Niklas Schneider 2 , and Carlos D. Hoyos 1 1 School of Earth and Atmospheric Sciences, Georgia Institute of Technology

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Lina I. Ceballos 1 , Emanuele Di Lorenzo 1 , Niklas Schneider 2 , and Carlos D. Hoyos 1

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  1. North Pacific Gyre Oscillation synchronizes climate fluctuations in the eastern and western North Pacific Lina I. Ceballos1, Emanuele Di Lorenzo1, Niklas Schneider2, and Carlos D. Hoyos1 1 School of Earth and Atmospheric Sciences, Georgia Institute of Technology 2 International Pacific Research Center, University of Hawaii at Manoa Western Pacific Geophysics Meeting, Cairns, Australia, 29 July - 1 August, 2008

  2. North Pacific Oscillation (NPO) SLPa EOF2 Atmosphere North Pacific Oscillation NPO

  3. North Pacific Oscillation (NPO) SLPa EOF2 Atmosphere North Pacific Oscillation NPO Ocean North Pacific Gyre Oscillation NPGO Di Lorenzo et al., 2008

  4. North Pacific Gyre Oscillation (NPGO) SSHa response to NPO Ocean North Pacific Gyre Oscillation NPGO Di Lorenzo et al., 2008 SSHa from Earth Simulator ocean model (OFES) NPGO Index

  5. North Pacific Gyre Oscillation (NPGO) SSHa response to NPO Ocean North Pacific Gyre Oscillation NPGO Di Lorenzo et al., 2008 SSHa from Earth Simulator ocean model (OFES) NPGO Index

  6. California Current CalCOFI observations North Pacific Gyre Oscillation (NPGO) SSHa response to NPO SSHa from Earth Simulator ocean model (OFES) Di Lorenzo et al., 2008

  7. California Current CalCOFI observations North Pacific Gyre Oscillation (NPGO) SSHa response to NPO SSHa from Earth Simulator ocean model (OFES) Di Lorenzo et al., 2008

  8. North Pacific Gyre Oscillation (NPGO) SSHa response to NPO Is NPGO also linked to changes in the KOE? SSHa from Earth Simulator ocean model (OFES)

  9. North Pacific Gyre Oscillation (NPGO) SSHa response to NPO Is NPGO also linked to changes in the KOE? SSHa from Earth Simulator ocean model (OFES)

  10. North Pacific Gyre Oscillation (NPGO) SSHa response to NPO Is NPGO also linked to changes in the KOE? SSHa from Earth Simulator ocean model (OFES) Taguchi et al., 2007

  11. Are NPGO and KOE related?

  12. Are NPGO and KOE related? Taguchi et al., 2007

  13. Are NPGO and KOE related? Taguchi et al., 2007 Di Lorenzo et al., 2008c

  14. Are NPGO and KOE related? NPGO leads KOE by 3 yrs Taguchi et al., 2007 Di Lorenzo et al., 2008

  15. Correlation NPGO-KOE mode 2 Are NPGO and KOE related? NPGO leads KOE by 3 yrs Taguchi et al., 2007 Di Lorenzo et al., 2008

  16. Correlation NPGO-KOE mode 2 Are NPGO and KOE related? transect 35.25°N NPGO leads KOE by 3 yrs Taguchi et al., 2007 Di Lorenzo et al., 2008

  17. Are NPGO and KOE related? transect 35.25°N Eastern Boundary Western Boundary Lagged correlation KOE mode 2 vs. SSHa

  18. Are NPGO and KOE related? transect 35.25°N Eastern Boundary Western Boundary Lagged correlation KOE mode 2 vs. SSHa

  19. What dynamics control the westward propagation? Eastern Boundary Western Boundary Lagged correlation KOE mode 2 vs. SSHa

  20. Rossby wave model (Qiu, 2003) What dynamics control the westward propagation?

  21. Rossby wave model (Qiu, 2003) Sea surface height anomaly Ekman pumping

  22. Section 32°-38°N Rossby wave model (Qiu, 2003) NCEP/NCAR monthly wind stress

  23. Section 32°-38°N Rossby wave model (Qiu, 2003) NCEP/NCAR monthly wind stress

  24. Section 32°-38°N Rossby wave model (Qiu, 2003) NCEP/NCAR monthly wind stress

  25. Section 32°-38°N Rossby wave model (Qiu, 2003) NCEP/NCAR monthly wind stress What is the role of NPO in driving SSHa in the KOE?

  26. Modes of atmospheric variability Forcing of the NPGO (Di Lorenzo et al., 2008; Chhak et al.,2008) North Pacific Oscillation

  27. Modes of atmospheric variability Aleutian mode Forcing of the NPGO (Di Lorenzo et al., 2008; Chhak et al.,2008) North Pacific Oscillation

  28. Modes of atmospheric variability Method of analysis: We decompose the wind stress field into the AL and NPO mode to drive Rossby Wave model Aleutian mode North Pacific Oscillation

  29. Modes of atmospheric variability Aleutian mode North Pacific Oscillation

  30. Modes of atmospheric variability Aleutian mode North Pacific Oscillation

  31. Summary

  32. Summary

  33. Summary

  34. Summary

  35. Summary

  36. Are NPGO and KOE related? NPGO: strength of the central/eastern branch of subtropical gyre KOEmode 2: strength of the Kuroshio Jet 3 year lag

  37. Are NPGO and KOE related? transect 35.25°N NPGO: strength of the central/eastern branch of subtropical gyre KOEmode 2: strength of the Kuroshio Jet 3 year lag we perform a Lagged correlation KOE mode 2 vs. SSHa

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